Translation guide
The proportion of light reflected by a surface. In Japanese, the scientific term is アルベド, but in everyday contexts, phrases like 反射率 or 光の反射率 are more common.
The ratio of reflected radiation to incident radiation on a surface, used in astronomy, climatology, and physics.
The standard loanword used in scientific and technical contexts. Directly equivalent to 'albedo'.
地球のアルベドは約0.3です。
The Earth's albedo is about 0.3.
アルベドが高いほど、より多くの光を反射します。
The higher the albedo, the more light it reflects.
Literally 'reflective power'. Used in some scientific contexts, but less common than アルベド.
この惑星の反射能は非常に低い。
The albedo of this planet is very low.
The reflectivity of a surface, often discussed in terms of heat or brightness.
Means 'reflectance' or 'reflectivity'. Commonly used in everyday contexts, such as describing the reflectivity of materials.
白いペンキは反射率が高いので、部屋が明るくなります。
White paint has high reflectance, so it makes the room brighter.
この素材の反射率を測定してください。
Please measure the reflectance of this material.
Specifically 'light reflectance'. Used when emphasizing light rather than other types of radiation.
雪の光の反射率はとても高いです。
Snow has a very high light reflectance.
Use アルベド in scientific papers, astronomy, or climatology. Use 反射率 in everyday conversation about materials, paint, or general reflectivity. 反射率 is more widely understood by non-specialists.